Apple has updated the archives for all these old versions with new signing. You can download them at the apple developer downloads site - https://developer.apple.com/download/more/. I would recommend going that route to make sure you are getting valid, un-compromised versions.
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)Running into the same issue (macOS 10.14.4, first touchbar 15" MBP, Thunderbolt 3 to ethernet adaptor).Core dump server is connected via ethernet.Even tried started kdumpd manually inside launchctl to see if having it running rather than on-demand would help. No dice.client (panic-ing mac):$ nvram -p | grep boot-args
boot-args debug=0xd44 _panicd_ip=192.168.1.213 kdp_match_name=en9$ ifconfig
en9: flags=8863<up,broadcast,smart,running,simplex,multicast> mtu 1500
options=4<vlan_mtu>
ether 58:ef:68:13:96:66
inet6 fe80::452:8c4d:571b:c390%en9 prefixlen 64 secured scopeid 0x7
inet 192.168.1.108 netmask 0xffffff00 broadcast 192.168.1.255
nd6 options=201<performnud,dad>
media: autoselect (1000baseT )
status: active
…Checked the kernel debug kit as per Quinn's suggestion, no dice.Disabled SIP so I could use the dtrace test to force a panic:sudo dtrace -w -n "BEGIN{ panic();}"(note that neither the technote or kernel debug kit readme mention that the nvram commands have to be done while in recovery mode, nor that you have to disable SIP to run the dtrace test. Technote references InstantPanic attached to it but that is only built for PPC and modifying and building oneself results in something that I'm not able to get installed - unauthorized kext error. Feedback ID: 6127904)Also the recommended keystrokes to generate NMI (both command keys and power button as per http://developer.apple.com/qa/qa2001/qa1264.html ) don't seem to work on my 15" late 2016 touchbar MBP (?).Currently when I run the dtrace the mac just hangs.Any suggestions appreciated.
